ptsa

A path tree spanning algorithm ( PTSA ) is designed to compute page accessibility .

为计算网页可达性，设计了计算到达网页路径的路径树生成算法（PTSA）。

Microwave radiation for synthesis of isopropyl chloroacetate with PTSA / C as the catalyst

微波辐射对甲苯磺酸/C催化合成氯乙酸异丙酯

Study on the Synthesis of Allantoin with a Composite Acid of PTSA / H_3PO_4 as Catalyst

PTSA/H3PO4复合酸催化合成尿囊素的研究

Conclusions : PTSA combined with ICSI is an effective method for treatment of obstructive azoospermia and non - obstructive azoospermia .

结论采用PTSA技术获取的睾丸精子进行ICSI是治疗梗阻性及非梗阻性无精子症的一种安全、简单、有效的方法。

The cyclization reaction in xylene of cis-1,4-polyisoprene in the presence of binary acidic SnCl 4 / PTSA catalyst was studied .

研究了顺1，4聚异戊二烯在二甲苯溶剂中在酸性复合催化剂SnCl4／PTSA存在下的环化反应。

It was reported that the synthesis of isopropyl chloroacetate catalyzed by p toluenesulfonic acid ( PTSA ) supported on activated carbon under microwave irradiation .

报道了用活性炭固载对甲苯磺酸作催化剂，微波辐射法合成氯乙酸异丙酯。

It is illustrated from the cyclic voltammograms of needle coke prepared through adding PTSA and HMTA that electrostatic adsorption is the main form of electrode storage .

添加了PTSA和HMTA制备的针状焦，其循环伏安曲线表明静电吸附是其电极储能的主要方式。

Ordered mesoporous carbon was successfully prepared using siliceous MCM-48 as template , p-toluenesulfonic acid ( PTSA ) as catalyst , and furfuryl alcohol as carbon source .

以纯硅MCM-48为模板、对甲苯磺酸为催化剂、糠醇为碳源成功制备了高度有序的中孔炭分子筛。

Objective To investigate the efficacy of intracytoplasmic sperm injection ( ICSI ) combined with percutaneous testicular sperm aspiration ( PTSA ) in the treatment of severe male infertility .

目的了解经皮睾丸精子抽吸术（PTSA）结合卵浆内单精子注射（ICSI）技术治疗严重男性因素不育的治疗效果。

PTSA provides many possible choices for all sub-projects in a project which will be arranged in serial or parallel way , so PTSA improves the applied value of Topological Sort Algorithm .

PTSA算法为工程中各子工程的串行或并行安排提供了确定的选择，提升了拓扑排序算法的实用价值。

The effect of self-setting resin sand mold catalyzed with para-toluene sulphonic acid ( PTSA ) and phosphoric acid on the surface structure of ductile cast iron casting has been studied .

研究了用对甲苯磺酸和磷酸作固化剂的树脂自硬砂型对球铁件表面组织的影响；

Objective To obtain information on the application value of percutaneous epididymal sperm aspiration ( PESA ) and percutaneous testicle sperm aspiration ( PTSA ) in the differentiating diagnosis of obstructive and nonobstructive azoospermia .

目的探讨经皮附睾精子抽吸术（PESA）及经皮睾丸精子抽吸术（PTSA）在无精子症鉴别诊断中的应用价值。

It was found that the hydroxy group and carboxy group of the copolymer were crosslinked with methoxyl group of HMMM under different temperature . In the presence of acidic catalyst PTSA , curing temperature for hydroxy group is lower than that for carboxy group .

共聚物上的弪基和羧基与固化剂（六甲氧基甲基三聚氰胺）上的甲氧基在不同温度区间交联，在催化剂（对甲基苯磺酸）的存在下，羟基交联温度低于羧基。